Issues W/ 2025 MacBook Air M4

I have a 2025 MacBook Air and I do not understand why I am having such an issue with being able to get this thing to push thru but I seem to hit a speed bump every which way I think I have found a solution. To make a long story short, my MacBook Air has no disk utility. The only available MacOS I have available to me that I can use for a host Mac, I can't use the admin password. There's gotta be another way around this, right? My target Mac is the MacBook Air with M4 chip. Also, with that being said with my password, I can't download anything from the App store because my host Mac needs to update and in order to do the update, I have to have my password... UGH! Any helpful tips would be MUCH appreciated!